allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/items"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="0dp" />

    <!-- add handle view-->
    <ImageView
        android:id="@+id/handle_view"
        android:layout_width="20dp"
        android:layout_height="40dp"
        android:layout_marginTop="0dp"
        android:layout_marginEnd="0dp"
        android:background="@color/black"
        android:contentDescription="@string/quick_scroll_handle"
        android:scaleType="centerCrop"
        android:src="@drawable/ic_unfold_more_black_48dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />